Recent content by Broadlands

The fact remains that Percy hasn't the on-board technology to evaluate the Martian sediments as does Curiosity, Makes it much more difficult to find any evidence of life, much less past life.

Agree.

Percy doesn't have the ability to recognize and confirm the presence of fossilized organic cellular remains, carbon that would help prove there was life on Mars billions of years ago . Everything else is a proxy.

The rovers were not sent to find out if conditions for life were there billions of years ago. They were sent to study the rocks to search for life or some actual evidence it was there. So far nothing has been found and only two samples have actually been taken and x-rayed. by Curiosity. None...

The only way to be sure that there was life on Mars (or anywhere) is to find fossil organic carbon residues that are found even in the oldest rocks on Earth. The remains of cellular organic matter preserved in martian sediments. And even that could be from carbonaceous chondrite meteorites that...

" If removing carbon doesn't immediately reverse heating, then carbon isn't responsible for heating." If CO2 causes heating, then removing it will stop the heating. The problem remains how to do it quantitatively in the billions of tons required.

it should have been obvious from the beginning that carbon removal would never make a dent in the amount required to lower Earth's temperature. Why? Because just one part-per-million of CO2 is 7.8 billion metric tons and the global technology is taking out a few million. A heavily subsided scam.

To "jump start" life anywhere there must be liquid water and protection from solar UV radiation . But also dry land for abiogenesis to form peptide and nucleotide bonds leading to DNA and proteins. Meteorites could provide the starting materials...amino acids. Liquid water the source of oxygen...

I was thinking more about these kinds of evidence... https://www.nps.gov/subjects/volcanoes/pyroclasts.htm Larger fragments seen from space.

" This feature was likely formed as the result of cooling magma that fed fiery eruptions of lunar volcanoes around 3.5 billion years ago. " There should be large amounts of coarse-grained pyroclastic rocks in the vicinity of these old volcanoes as there was no running water to erode them. These...

It's a big assumption about all that hydrogen. Water in the stratosphere would photodissociate with the more intense solar UV and the hydrogen lost to space. That's what created oxygen and ozone to protect the evolution of life in the early Archean.

The Antarctic ozone "hole" is seasonal and any winter ozone depletion is quickly restored back to its normal amount..about 300 Dobson units. The geographic size...the area covered, is limited to the wind-driven polar vortex and that has nothing to do with CFCs or the chlorine they contain.

Sorry to be unclear. Perhaps it should have said adding extra CO2 emissions... if the issue is already a high priority. Those short-sighted desires of the masses are what is keeping us on the path to renewables and electric transportation...conventional vehicles are doing the work during the...

"it does seem politically unwise to gather data on our own compliance with emission reduction pledges." We have already compromised our pledges for compliance when oil was taken from strategic reserves to make transportation fuels more available and less costly. The reality is we are a big part...

Yes, it is frustrating when alarmists continue to use words and phrases like denialism and straw men when the information on the amount of AGW global warming is widely available. What's more frustrating is the urge, the protests and demands we attempt to prevent or mitigate it. Do the math.